add logging

start.py

@@ -222,10 +222,13 @@ if __name__ == '__main__':
     for line in client.events():
         line_str = line.decode("utf-8")
         event = json.loads(line_str)
+        logging.info('Event: %s', json.dumps(event))
 
         if event['Action'] in ['create']:
             # check if there is any domain name configured
             container_id = event['id']
+            logging.info('Create container id: %s', container_id)
+
             if len(list_domains.handle_container(client, container_id)) > 0:
                 resolved_domains = list_domains.get_resolving_domains_from_containers(client)
                 resolved_domains = sorted(resolved_domains)